@Jan: in the document linked by Paul
(http://www.maximintegrated.com/en/app-notes/index.mvp/id/148) they start by
saying "The scope of this document is limited to 1-Wire networks that use
Category 5, twisted-pair copper wire and have 5V bus power supplied by the
master"
So i guessed that this was
@Paul: Yes i had read that website some time ago. It made me change (then)
from (mixed) star topology to my current (linear) bus. to accomodate this i
followed the suggestions of the list members and used the utp-wires 4and5
for the dépard and wires 3and6 for the return.
I did not try another chann
I have a plugin board running on top of my pi containing a DS2482-800 and an
2482-100 master. Both are connected through I2C.
The DS18b20's that are connected are connected in bus layout and are powered
(not parasite)
Everything was running fine, but when i tried to add a couple of sensors i
run in
>Are you powering this HC-SR04 through the bus? If yes, how much current
does it draw? This current has to flow back through the GND wire and >may
lift the GND level on the far end on long, thin GND wires an substantial
amount, creating communication problems.
>
>Kind regards
>
> Jan
The HC-
As suggested in an earlier thread, i changed my setup from a tree, to a bus.
To make it myself easier, i bought a 9bus board from pridopia (1 DS2482-100
and a DS2482-800)
I am not using the DS2482-100, but the first 5 channels from the DS2482-800.
All the sensors are connectes as a bus
Everything w
>If you really need a tree, you have to put a DS2409 bus coupler on each
fork. Usually it is simpler to create an electrical bus without >leaves by
making lobes of 1wire+GND forward and 1wire+GND return wires to the remote
locations.
>>
>> The problem that i am experiencing is that when i read th
I have a 1-wire network running on my raspberry pi (owfs v 2.9p0 running on
raspbian)
The master is a DIY board build around a DS2490 and an DS9053 (basically
this
(http://www.dgkelectronics.com/blog/wp-content/uploads/2012/03/1-wire_adapte
r.png) schematic but with a MAX8873
The hubs I made are R
I am mesuring on a copper tube (sensor attached with tie wraps so the flat
side makes a good connection).
The temps i am measuring are between 12 and 22 °C. The tube and the sensor
are insulted with tube insulation (its on my heat pump). (ambient temp is
25°C) The 2 sensors are +-10cm apart so they
I have several DS18x20 sensors in my network, some DS18S20 (the first 12)
and some DS18B20 (some more added later).
Since i was unsure about some reading of some DS18S20 sensors i used a
second DS18B20 on the same spot...
That reading was about 2°C higher than the DS18S20... i moved it about and
i
My owfs is running on a radspberry pi, monitoring 25 ds18b20 and 4 counter
modules (4x ds2423) via a diy usb interface
Every 5 minutes a script gets the counter values and puts them in a in a
database. For the thermometers i am using temploggerd.
the system was running fine (no lost inof on the te
A few weeks ago, there was a discussion about the unstable owserver with usb
and longer cables. Is there a solution for it?
On my setup (see below) i have a similar problem where it falls of at
different intervals.
I recently experience a similar problem? :
i have a diy usb uplink with 4 Ds2423 c
I have a similar problem, with owfs 2.7p32-2 and 2.7p38-1 on an nslu2
running unslung: when using temploggerd and a script, owfs crashes
The script now checks if everything is ok, and does a restart if not, but
the temploggerd graphs look all messed up.
Someone suggested to use a serial based de
i installed owfs 2.7p38-1 on my unslung nslu2. (unslung 6.8)
i also installed temploggerd for monitoring 8 tempsensors.
I did a full upgrade by ipkg update and ipkg upgrade
The 1-wire interface is usb based on ds2490 , all the counters and ds18s20
are connected directly to this interface (no su
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